Drilling And Blasting - Study Mode

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[#681] The power of explosive is given by in terms of

(A) Fume

(B) Sensitivety

(C) Water resistance

(D) Weight strength

Correct Answer

(D) Weight strength

[#682] Oxygen balanced explosive mixture with . . . . . . . . of desel oil by weight.

(A) 1 - 2%

(B) 4 - 5%

(C) 5 - 6%

(D) 8 - 10%

Correct Answer

(C) 5 - 6%

[#683] The number of cylinders of oxygen in PT 61 pulmotor.

(A) 1

(B) 2

(C) 3

(D) 4

Correct Answer

(A) 1

[#684] Main shafts are designed for . . . . . . . .

(A) Material hoisting

(B) Stowing

(C) Manwinding

(D) Hoisting mineral

Correct Answer

(D) Hoisting mineral

[#685] Manometric efficiency of axial flow fan is . . . . . . . .

(A) Low

(B) High

(C) Medium

(D) All of these

Correct Answer

(A) Low